ASV-1.8432MHZ-EJ-T ABRACON Crystal or Oscillator (Other) In Stock
The ASV-1.8432MHZ-EJ-T is an ABRACON 1.8432 MHz SMD crystal oscillator in a 4-pin package with tri-state enable/disable function and 5 ns maximum fall time. It offers 20 ppm frequency stability and tape-and-reel packaging for automated SMT assembly. Available from authorized distributors with worldwide shipping.
- Manufacturer
- ABRACON
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- ASV-1.8432MHZ-EJ-T Datasheet PDF
- Category
- Crystal or Oscillator
- Temp Range
- -20.0°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.8432 MHz nominal frequency with 20 ppm stability, a standard UART baud-rate-friendly clock ideal for 9600 bps to 115200 bps serial interface generation
- Tri-state enable/disable function allowing the oscillator output to be gated by a logic signal, reducing power consumption in duty-cycled or multi-clock PCB designs
- Tape-and-reel (-T) SMD 4-pin package with 5 ns maximum fall time enabling automated pick-and-place assembly and fast signal transitions for serial timing circuits
Applications
The ASV-1.8432MHZ-EJ-T is widely used as the clock source for UART baud-rate generation in microcontrollers, serial communication ICs, and embedded systems requiring standard baud rates such as 9600, 19200, 57600, and 115200 bps with zero error. It suits RS-232, RS-485, and Bluetooth SPP interface designs where an exact baud-rate-derived clock minimizes framing errors in long-duration data transfers. The enable/disable pin makes it convenient in low-power IoT nodes that gate the oscillator during deep-sleep intervals to reduce standby current.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 12Weeks |
| YTEOL | 5 |
| Additional Feature | TRI-STATE; ENABLE/DISABLE FUNCTION; TAPE AND REEL |
| Fall Time-Max | 5ns |
| Frequency Adjustment-Mechanical | NO |
| Frequency Stability | 20% |
| JESD-609 Code | e4 |
| Mounting Feature | SURFACE MOUNT |
| Operating Frequency-Nom | 1.8432MHz |
| Oscillator Type | HCMOS/TTL |
| Output Load | 10 TTL, 15 pF |
| Physical Dimension | 7.0mm x 5.08mm x 1.8mm |
| Rise Time-Max | 5ns |
| Supply Voltage-Max | 3.63V |
| Supply Voltage-Min | 2.97V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Symmetry-Max | 40/60 % |
| Terminal Finish | Gold (Au) - with Nickel (Ni) barrier |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why is 1.8432 MHz a preferred oscillator frequency for UART-based serial communication designs?
1.8432 MHz is exactly 16 times the 115200 bps UART baud rate and 192 times the 9600 bps rate, producing zero fractional divide error across all standard baud rates from 1200 bps to 115200 bps. This eliminates UART framing errors that can accumulate over long serial data packets when a non-integer clock divisor is used, making ASV-1.8432MHZ-EJ-T a go-to clock for serial port controllers and UARTs.
What does the tri-state enable/disable function on the ASV-1.8432MHZ-EJ-T allow in a low-power IoT design?
The tri-state enable/disable pin allows the microcontroller to assert a logic low (or high, depending on polarity) to disable the oscillator output and place it in a high-impedance tri-state condition. This can reduce oscillator current from a few milliamps down to microamp-level standby, extending battery life by 10–30% in duty-cycled IoT nodes that wake for serial data bursts every 10 seconds or longer.
What is the frequency stability of the ASV-1.8432MHZ-EJ-T and is it sufficient for industrial serial communication?
The ASV-1.8432MHZ-EJ-T has a frequency stability of 20 ppm over its operating temperature range. For RS-232 and RS-485 UART links, the standard requires a total timing error below 5% per bit period; even with 20 ppm drift, the resulting baud rate error is approximately 0.002%, well within this margin across the full temperature range of commercial and light industrial applications.
How does the tape-and-reel packaging and 4-pin SMD format of ASV-1.8432MHZ-EJ-T benefit high-volume PCB assembly?
The -T suffix designates tape-and-reel packaging, which allows the oscillator to be loaded into a standard SMT pick-and-place machine feeder without manual handling. Combined with the 4-pin SMD footprint and 5 ns maximum output fall time, this enables automated placement at production throughput rates exceeding 1000 components per hour, significantly reducing assembly cost compared to through-hole oscillator cans requiring manual insertion.
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